my Mi Band 2 would not record my sleep data. I unpaired the Mi Band and uninstalled the Mi Fit app on my android phone. I reinstalled the Mi Fit app on my phone but could not log in. I tried to recover my password, but I kept getting a message that my account did not exist. I tried my email address, mobile phone number, and Google Voice number but kept getting the same message. I created a new account and was finally able to log in to the app. I entered my personal information, but when I tried to pair my phone the app said “Band is paired by other person. Ask them to unpair it and try again” which is impossible to do since I had already unpaired it.

Hi,
Sorry for the late reply !
As per the Security Norms, a Mi Band can only be paired with one and only one Mi Account at a particular time.
Therefore there is no way that you would be able to pair your Mi Band with any other account while it's already paired with one.

anyone in the forum has this sorted out, mind to share, i hv just used my mi band 2 for just slightly over 1 month, and now the mi fit app says it's already paired with another account, contacted Customer service but they couldn't help, asked to refer to seller, no wonder xiaomi products are cheap cuz it comes with a lousy server which could not delete account and wasting much of the customer's precious time which involves much opportunity costs, at the end of the day, think this mi band 2 is even costlier than fitbit/garmin....anyway after these experiences, i have told myself NEVER EVER to buy xiaomi products anymore no matter how 'grand' or ' cheap' is their product...their 'cheap' comes with a hefty future costs....perhaps we should start BOYCOTT XIAOMI PRODUCTS campaign....

Be sure the Band is charged. First go to Settings > Apps, and 'Force Stop' 'Bluetooth Share' process. Also, 'Clear Data' for the same. Restart your phone. The Mi App should be removed from the blueooth: Settings->Bluetooth-> Settings on MI->FORGET

Then try to connect your device to the USB (via your PC) and when the leds starts blinking try to connect **directly** from your phone to the band.